diff --git a/tests/gtest/avifrgbtoyuvtest.cc b/tests/gtest/avifrgbtoyuvtest.cc
index a34e8d6279..ec7ab56b32 100644
--- a/tests/gtest/avifrgbtoyuvtest.cc
+++ b/tests/gtest/avifrgbtoyuvtest.cc
@@ -473,8 +473,6 @@ constexpr avifMatrixCoefficients kMatrixCoefficientsIdentity =
     AVIF_MATRIX_COEFFICIENTS_IDENTITY;
 constexpr avifMatrixCoefficients kMatrixCoefficientsYCgCoRe =
     AVIF_MATRIX_COEFFICIENTS_YCGCO_RE;
-constexpr avifMatrixCoefficients kMatrixCoefficientsYCgCoRo =
-    AVIF_MATRIX_COEFFICIENTS_YCGCO_RO;
 
 // This is the default avifenc setup when encoding from 8b PNG files to AVIF.
 INSTANTIATE_TEST_SUITE_P(